The
Goddard High Resolution Spectrograph (GHRS or HRS) was a spectrograph installed on the
Hubble Space TelescopeThe Hubble Space Telescope is a space telescope that was carried into orbit by the space shuttle in April 1990. It is named after the American astronomer Edwin Hubble. Although not the first space telescope, the Hubble is one of the largest and most versatile, and is well-known as both a vital...
. It was replaced by the
Near Infrared Camera and Multi-Object SpectrometerThe Near Infrared Camera and Multi-Object Spectrometer is a scientific instrument for infrared astronomy, installed on the Hubble Space Telescope , operating from 1997 to 1999, and from 2002 to 2008....
(NICMOS) in 1997.
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The
Goddard High Resolution Spectrograph (GHRS or HRS) was a spectrograph installed on the
Hubble Space TelescopeThe Hubble Space Telescope is a space telescope that was carried into orbit by the space shuttle in April 1990. It is named after the American astronomer Edwin Hubble. Although not the first space telescope, the Hubble is one of the largest and most versatile, and is well-known as both a vital...
. It was replaced by the
Near Infrared Camera and Multi-Object SpectrometerThe Near Infrared Camera and Multi-Object Spectrometer is a scientific instrument for infrared astronomy, installed on the Hubble Space Telescope , operating from 1997 to 1999, and from 2002 to 2008....
(NICMOS) in 1997.
GHRS facts
- Instrument type: Ultraviolet
Ultraviolet light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than x-rays, in the range 10 nm to 400 nm, and energies from 3 eV to 124 eV...
spectrograph
- Wavelength
In physics, the wavelength of a sinusoidal wave is the spatial period of the wave – the distance over which the wave's shape repeats.It is usually determined by considering the distance between consecutive corresponding points of the same phase, such as crests, troughs, or zero crossings, and is a...
range: 1050 to 3200 ÅThe ångström or angstrom is an internationally recognized unit of length equal to 0.1 nanometre or 1 metres. It is named after Anders Jonas Ångström...
(105 to 320 nm)
- Resolving Power
Resolving power may refer to:* Angular resolution* Spectral resolution* Resolution...
at 1200 Å (120 nm)
- Low - 2,000 (0.6 Å or 60 pm, or a Doppler effect
The Doppler effect , named after Austrian physicist Christian Doppler who proposed it in 1842, is the change in frequency of a wave for an observer moving relative to the source of the wave. It is commonly heard when a vehicle sounding a siren or horn approaches, passes, and recedes from an observer...
of 150 km/s)
- Medium - 20,000 (0.06 Å or 6 pm, 15 km/s)
- High - 100,000 (0.012 Å or 1.2 pm, 3 km/s)
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